[SOLVED] Damaged motor connector

[walle]

Hi,

I recently bought and assembled a crazyflie nano (1.0). When soldering it together I accidentally messed up the soldering of the M3 connector. The square pad got plugged and the round one no longer has any connectivity. By chance I discovered that I could get the motor spinning by attaching the white M3 cable directly to the transistor leg next to M3 (http://imgur.com/EhFJh9j). The black cable is attached as it should be but on the reverse side of the board. However, I do not know if this is a valid way of connecting M3? Since my crazyflie is too unstable to fly (it immediately flips over when applying thrust) I wanted to make sure the soldering isn't the cause of the problem before I continue troubleshooting.

From what I can see by plotting the performance of the motors (http://imgur.com/7XxyCYx) in the client, they are performing about equal.

Please tell me if there is any other data that might aid in analyzing the problem.


Best regards,
Alex

[tobias]

Yes that is perfectly OK. I would expect that either you put the propellers on the wrong way or maybe you put one of the motors on the wrong arm?

[walle]

Sorry for late reply. Haven't had time to look into things until now. You are right, I had accidentally connected M2 to the M4 connectors and vice versa. Fixed it and now the crazyflie is flying! It's drifting slightly, seems like M3 and M4 is thrusting a little bit more than M1 and M2, but I guess that can be calibrated.

Thanks for the help!

Alex